Falhas do tipo CWE-121

3.847 resultados

Estouro de buffer na pilha

Ocorre quando código escreve mais dados em um buffer alocado na pilha do que sua capacidade permite, sobrescrevendo dados adjacentes (variáveis, endereços de retorno). Um atacante pode explorar isso para executar código arbitrário ou crashar a aplicação alterando o fluxo de execução.

Exemplo

Uma função C que copia uma string do usuário diretamente em um array local sem validar tamanho: `char buffer[10]; strcpy(buffer, user_input);`. Se user_input tiver 50 caracteres, os 40 extras sobrescrevem a pilha, incluindo potencialmente o endereço de retorno da função.

Como mitigar

Use funções seguras que limitam escrita (strncpy, snprintf em vez de strcpy/sprintf), valide tamanho de entrada antes de copiar, ative proteções do compilador (stack canaries, ASLR) e use ferramentas de análise estática para detectar cópias sem limite.

CVE-2025-4890MEDIUMcode-projects Tourism Management System Login User LoginUser stack-based overflowEPSS 0.4%CVE-2025-4892MEDIUMcode-projects Police Station Management System Delete Record source.cpp remove stack-based overflowEPSS 0.4%CVE-2025-66177HIGHThere is a Buffer overflow Vulnerability in the device Search and Discovery feature of Hikvision NVR/DVR/CVR/IPC models. If exploited, an atEPSS 0.4%CVE-2025-4029MEDIUMcode-projects Personal Diary Management System New Record addrecord stack-based overflowEPSS 0.4%CVE-2025-4063MEDIUMcode-projects Student Information Management System cancel stack-based overflowEPSS 0.3%CVE-2025-4061MEDIUMcode-projects Clothing Store Management System add_item stack-based overflowEPSS 0.3%CVE-2026-76676HIGHUnauthenticated Buffer Overflow Vulnerabilities lead to Remote Code Execution in EdgeConnect SD-WAN GatewaysEPSS 0.3%CVE-2025-4062MEDIUMcode-projects Theater Seat Booking System cancel stack-based overflowEPSS 0.3%CVE-2026-6687HIGHFatFs Stack Buffer Overflow via Uncapped exFAT Label LengthEPSS 0.3%CVE-2025-4500MEDIUMcode-projects Hotel Management System Edit Room edit stack-based overflowEPSS 0.3%CVE-2026-16687CRITICALPower System Buffer OverflowEPSS 0.3%CVE-2025-4499MEDIUMcode-projects Simple Hospital Management System Add Information add stack-based overflowEPSS 0.3%CVE-2025-4498MEDIUMcode-projects Simple Bus Reservation System Install Bus install stack-based overflowEPSS 0.3%CVE-2025-4501MEDIUMcode-projects Album Management System Search Albums searchalbum stack-based overflowEPSS 0.3%CVE-2011-10023HIGHMJM QuickPlayer <= 2010 .s3m Stack-Based Buffer OverflowEPSS 0.3%CVE-2023-25177HIGHDelta Electronics CNCSoft-B DOPSoft Stack-based buffer overflowEPSS 0.3%CVE-2026-41286HIGHStack-based Buffer Overflow in WatchGuard Agent Discovery Service on Windows Causes Denial of Service - Variant BEPSS 0.3%CVE-2024-12185MEDIUMcode-projects Hotel Management System Administrator Login Password stack-based overflowEPSS 0.3%CVE-2023-43683MEDIUMAn issue was discovered in Malwarebytes 4.6.14.326 and before 5.1.5.116 (and Nebula 2020-10-21 and later). A Stack buffer out-of-bounds acceEPSS 0.3%CVE-2024-21030MEDIUMVulnerability in the Oracle Complex Maintenance, Repair, and Overhaul product of Oracle E-Business Suite (component: LOV). Supported versioEPSS 0.3%